Unable to login using Safari or DuckDuckGo browser

I am completely unable to login to Netlify using Safari or the DuckDuckGo browser. Even when disabling all content blockers in Safari, and when disabling all protections in DuckDuckGo. I had to use Firefox to be able to login.

  1. Go to Netlify, fill in the form, submit
  2. A progress bar shows
  3. It redirects back to Netlify, no message is shown, no error, nothing